diff --git a/homeassistant/package_constraints.txt b/homeassistant/package_constraints.txt
index 167fe546b35..207268404a5 100644
--- a/homeassistant/package_constraints.txt
+++ b/homeassistant/package_constraints.txt
@@ -118,3 +118,7 @@ pydantic!=1.9.1
 # Breaks asyncio
 # https://github.com/pubnub/python/issues/130
 pubnub!=6.4.0
+
+# Package's __init__.pyi stub has invalid syntax and breaks mypy
+# https://github.com/dahlia/iso4217/issues/16
+iso4217!=1.10.20220401
diff --git a/script/gen_requirements_all.py b/script/gen_requirements_all.py
index 7b000a30be2..7f77f4ae106 100755
--- a/script/gen_requirements_all.py
+++ b/script/gen_requirements_all.py
@@ -136,6 +136,10 @@ pydantic!=1.9.1
 # Breaks asyncio
 # https://github.com/pubnub/python/issues/130
 pubnub!=6.4.0
+
+# Package's __init__.pyi stub has invalid syntax and breaks mypy
+# https://github.com/dahlia/iso4217/issues/16
+iso4217!=1.10.20220401
 """
 
 IGNORE_PRE_COMMIT_HOOK_ID = (